Duplicate Function in Readme

[ArielSAdamsNASA]

Describe the bug
In the version history of the readme, it states:

Removes the now-unnecessary CFE_SB_ZeroCopyHandle_t type and all APIs that refer or require it .Replaces CFE_SB_ZeroCopyGetPtr() and CFE_SB_ZeroCopyGetPtr() with two new simplified functions CFE_SB_AllocateMessageBuffer() and CFE_SB_ReleaseMessageBuffer() , respectively. These new functions do not use a separate handle. Updates the CFE_SB_TransmitBuffer() API to also remove the handle. Does affect public APIs.

The issue is that the version history is stating that the same function, CFE_SB_ZeroCopyGetPtr, is being replaced by two different functions.

In reality, CFE_SB_ZeroCopyGetPtr was replaced by CFE_SB_AllocateMessageBuffer. CFE_SB_ZeroCopyReleasePtr and CFE_SB_ZeroCopySend, not CFE_SB_ZeroCopyGetPtr, was replaced by CFE_SB_ReleaseMessageBuffer.

Expected behavior
State that CFE_SB_ZeroCopyReleasePtr and CFE_SB_ZeroCopySend, not CFE_SB_ZeroCopyGetPtr, was replaced by CFE_SB_ReleaseMessageBuffer.

Code snips
https://github.com/nasa/cFE/pull/1257/files

Reporter Info
Ariel Adams, ASRC Federal

[skliper]

Note CFE_SB_ZeroCopySend was replaced by CFE_SB_TransmitBuffer. CFE_SB_ZeroCopyReleasePtr was replaced by CFE_SB_ReleaseMessageBuffer.

[astrogeco]

Good catch, I think this was a copy paste error from a typo in the original PR.

[astrogeco]

Just fixed it in the comments for #1257 and #1258. Created a new PR, #1278, to fix it.